, duh.
>
>>public class ABusinessRule : mmBusinessRule
>{ ...
> #region validate specific data type methods
>
> public string ValidateDuplicateOrder<EntityType>(
> ABusiness<EntityType> oBusiness,
> string order,
> string sku)
> where EntityType : mmBusinessEntity, new()
> // the right type
> // but, what does "new()" do, or mean?
> {
> int recsFound = oBusiness.GetDuplicateOrder(order, sku);
>
> if (recsFound > 0)
> AddErrorProviderWarning(...)
> }
>>So, in a Order Type Business Rule:
>>public partial class OrderType1Rules : ABusinessRule
>{ ...
> public string ValidateDuplicateOrderType1(
> string order,
> string sku)
> {
> // note the casting of the business rule's HostObject to a compatible type
> return ValidateDuplicateOrder((OrderType1)this.HostObject, order, sku);
> }
>>
>If there's a better pattern, please let me know.
You've got it! The "new()" constraint says the method is allowed to create instances of the specified entity type.
Best Regards,
Kevin McNeish
Eight-Time .NET MVP
VFP and iOS Author, Speaker & Trainer
Oak Leaf Enterprises, Inc.
Chief Architect, MM Framework
http://www.oakleafsd.com
